Sorry nicodo... I knew you post in english, but as my post were for all the community, I must write it in Spanish. I'll take two photos of the file list format as soon as I can, one with OP6 = AA and one with OP6 = 8F in order you can see what I'm talking about. Anyway I'm going to try both values in bit 2 and bit 0 to see wich one is the culprit (I bet it is one of this two, because both changed from 0 to 1 when changing the last A to F) and post the results.
Regards